Don't Stop Believing in the Viscount

Lady Persephone Rensleight prefers being overlooked. Yet Viscount Longstaffe, a celebrated military hero, has always seen her. When a collection of secret letters draws them into an unexpected partnership, growing trust turns to temptation—and neither is prepared for the possibility of wanting more. 

Don't Stop Believing in the Viscount is Book 3 in the Scoundrels with Secrets Series but can be read as a standalone.